The Jersey Shore star chose to send his beautiful bouquet to the Coronation Street actress, explaining in his accompanying note that Thrall had "let [him] down in a big way" by not comforting him after he was nominated for eviction.
"Last night Julie stayed outside with me all night," the message read. "The person who didn't was Danica and that upset me. She let me down last night in a big way. That's definitely why I'm giving Julie my flowers."
When the pair later spoke about the incident in private, Sorrentino told Thrall that he has "the closest connection" with her and considers her to be "a special girl".
"I'm like a puppy around you," he said, adding afterwards: "I wear my heart on my sleeve."
Sorrentino previously described Thrall as his "kryptonite", admitting that he feared being "played" by her.
Celebrity Big Brother continues with a live eviction episode tonight at 9pm on Channel 5.